From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Specification revision for the Kestrel FS.6 Cylinder Unit No.2, detailing supercharger modifications.
| Identifier | ExFiles\Box 54\4\ Scan154 | |
| Date | 2nd August 1933 | |
| To Hs. {Lord Ernest Hives - Chair} from RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} V+6 59 RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} 5/AP.2.8.33. Kestrel FS. {F. Steele} 6 Cylinder Unit No.2. Specification of the above Unit is revised as follows:- Supercharger Re-fitted to Engine 29.7.33. Supercharger LOP.E.36187- 10-1 Ratio.Segments.45°. Unit No.5218. Supercharger rotor reduced 30% in width. The following new parts fitted to suit:- 1-Hs. {Lord Ernest Hives - Chair} 1087 Stud-Vane ring. 1-Hs. {Lord Ernest Hives - Chair} 1088 " " " 1-Hs. {Lord Ernest Hives - Chair} 1089 " " " 1-Hs. {Lord Ernest Hives - Chair} 1090 Stud - Vane ring. 1-Hs. {Lord Ernest Hives - Chair} 1091 " " " 1-Hs. {Lord Ernest Hives - Chair} 1092 " " " Existing E.32815/1 Rotor modified to Hs. {Lord Ernest Hives - Chair} 1064. Existing E.32247/Diffuser Vane Ring modified to Hs. {Lord Ernest Hives - Chair} 1065. Existing E.36260 Casing modified to Hs. {Lord Ernest Hives - Chair} 1066. 1-V.1592 Packing plate. RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} | ||